1 files changed, 255 insertions, 0 deletions
diff --git a/lib/TclShell.py b/lib/TclShell.py
new file mode 100644
index 0000000..78d8dc4
--- /dev/null
+++ b/lib/TclShell.py
@@ -0,0 +1,255 @@
+# Tcl-based shell (for the Macintosh)
+
+import TclUtil
+import Tcl
+from Tcl import Interpreter, TclRuntimeError
+import mac
+import macpath
+from macpath import isfile, isdir, exists
+
+UsageError = TclRuntimeError
+
+class ShellInterpreter() = Interpreter():
+ #
+ def ResetVariables(interp):
+ interp.globals['ps1'] = '$ '
+ interp.globals['ps2'] = '> '
+ interp.globals['home'] = mac.getcwd()
+ #
+ def DefineCommands(interp):
+ interp.commands['cd'] = interp.CdCmd
+ interp.commands['grep'] = interp.GrepCmd
+ interp.commands['ls'] = interp.LsCmd
+ interp.commands['mkdir'] = interp.MkdirCmd
+ interp.commands['mv'] = interp.MvCmd
+ interp.commands['pg'] = interp.PgCmd
+ interp.commands['pwd'] = interp.PwdCmd
+ interp.commands['rm'] = interp.RmCmd
+ interp.commands['rmdir'] = interp.RmdirCmd
+ interp.commands['sync'] = interp.SyncCmd
+ #
+ def Reset(interp):
+ interp.ResetVariables()
+ interp.DefineCommands()
+ #
+ def Create(interp):
+ interp = Interpreter.Create(interp) # initialize base class
+ interp.Reset()
+ return interp
+ #
+ # Command-implementing functions
+ #
+ def CdCmd(interp, argv):
+ if len(argv) > 2:
+ raise UsageError, 'usage: cd [dirname]'
+ if len(argv) = 2:
+ chdirto(argv[1])
+ else:
+ chdirto(interp.globals['home'])
+ return ''
+ #
+ def GrepCmd(interp, argv):
+ if len(argv) < 3:
+ raise UsageError, 'usage: grep regexp file ...'
+ import regexp
+ try:
+ prog = regexp.compile(argv[1])
+ except regexp.error, msg:
+ raise TclRuntimeError, \
+ ('grep', argv[1], ': bad regexp :', msg)
+ for file in argv[2:]:
+ grepfile(prog, file)
+ return ''
+ #
+ def LsCmd(interp, argv):
+ if len(argv) < 2:
+ lsdir(':')
+ else:
+ for dirname in argv[1:]:
+ lsdir(dirname)
+ return ''
+ #
+ def MkdirCmd(interp, argv):
+ if len(argv) < 2:
+ raise UsageError, 'usage: mkdir name ...'
+ for name in argv[1:]:
+ makedir(name)
+ return ''
+ #
+ def MvCmd(interp, argv):
+ if len(argv) <> 3:
+ raise UsageError, 'usage: mv src dst'
+ src, dst = argv[1], argv[2]
+ if not exists(src):
+ raise TclRuntimeError, \
+ ('mv', src, dst, ': source does not exist')
+ if exists(dst):
+ raise TclRuntimeError, \
+ ('mv', src, dst, ': destination already exists')
+ try:
+ mac.rename(src, dst)
+ except mac.error, msg:
+ raise TclRuntimeError, \
+ (src, dst, ': rename failed :', msg)
+ return ''
+ #
+ def PgCmd(interp, argv):
+ if len(argv) < 2:
+ raise UsageError, 'usage: page file ...'
+ for name in argv[1:]:
+ pagefile(name)
+ return ''
+ #
+ def PwdCmd(interp, argv):
+ if len(argv) > 1:
+ raise UsageError, 'usage: pwd'
+ else:
+ return mac.getcwd()
+ #
+ def RmCmd(interp, argv):
+ if len(argv) < 2:
+ raise UsageError, 'usage: rm file ...'
+ for name in argv[1:]:
+ remove(name)
+ return ''
+ #
+ def RmdirCmd(interp, argv):
+ if len(argv) < 2:
+ raise UsageError, 'usage: rmdir dir ...'
+ for name in argv[1:]:
+ rmdir(name)
+ return ''
+ #
+ def SyncCmd(interp, argv):
+ if len(argv) > 1:
+ raise UsageError, 'usage: sync'
+ try:
+ mac.sync()
+ except mac.error, msg:
+ raise TclRuntimeError, ('sync failed :', msg)
+ #
+
+def chdirto(dirname):
+ try:
+ mac.chdir(dirname)
+ except mac.error, msg:
+ raise TclRuntimeError, (dirname, ': chdir failed :', msg)
+
+def grepfile(prog, file):
+ try:
+ fp = open(file, 'r')
+ except RuntimeError, msg:
+ raise TclRuntimeError, (file, ': open failed :', msg)
+ lineno = 0
+ while 1:
+ line = fp.readline()
+ if not line: break
+ lineno = lineno+1
+ if prog.exec(line):
+ print file+'('+`lineno`+'):', line,
+
+def lsdir(dirname):
+ if not isdir(dirname):
+ print dirname, ': no such directory'
+ return
+ names = mac.listdir(dirname)
+ lsfiles(names, dirname)
+
+def lsfiles(names, dirname):
+ names = names[:] # Make a copy so we can modify it
+ for i in range(len(names)):
+ name = names[i]
+ if isdir(macpath.cat(dirname, name)):
+ names[i] = ':' + name + ':'
+ columnize(names)
+
+def makedir(name):
+ if exists(name):
+ print name, ': already exists'
+ return
+ try:
+ mac.mkdir(name, 0777)
+ except mac.error, msg:
+ raise TclRuntimeError, (name, ': mkdir failed :', msg)
+
+def pagefile(name):
+ import string
+ if not isfile(name):
+ print name, ': no such file'
+ return
+ LINES = 24 - 1
+ # For THINK C 3.0, make the path absolute:
+ # if not macpath.isabs(name):
+ # name = macpath.cat(mac.getcwd(), name)
+ try:
+ fp = open(name, 'r')
+ except RuntimeError, msg:
+ raise TclRuntimeError, (name, ': open failed :', msg)
+ line = fp.readline()
+ while line:
+ for i in range(LINES):
+ print line,
+ line = fp.readline()
+ if not line: break
+ if line:
+ try:
+ more = raw_input('[more]')
+ except (EOFError, KeyboardInterrupt):
+ print
+ break
+ if string.strip(more)[:1] in ('q', 'Q'):
+ break
+
+def remove(name):
+ if not isfile(name):
+ print name, ': no such file'
+ return
+ try:
+ mac.unlink(name)
+ except mac.error, msg:
+ raise TclRuntimeError, (name, ': unlink failed :', msg)
+
+def rmdir(name):
+ if not isdir(name):
+ raise TclRuntimeError, (name, ': no such directory')
+ try:
+ mac.rmdir(name)
+ except mac.error, msg:
+ raise TclRuntimeError, (name, ': rmdir failed :', msg)
+
+def printlist(list):
+ for word in list:
+ print word,
+
+def columnize(list):
+ import string
+ COLUMNS = 80-1
+ n = len(list)
+ colwidth = maxwidth(list)
+ ncols = (COLUMNS + 1) / (colwidth + 1)
+ if ncols < 1: ncols = 1
+ nrows = (n + ncols - 1) / ncols
+ for irow in range(nrows):
+ line = ''
+ for icol in range(ncols):
+ i = irow + nrows*icol
+ if 0 <= i < n:
+ word = list[i]
+ if i+nrows < n:
+ word = string.ljust(word, colwidth)
+ if icol > 0:
+ word = ' ' + word
+ line = line + word
+ print line
+
+def maxwidth(list):
+ width = 0
+ for word in list:
+ if len(word) > width:
+ width = len(word)
+ return width
+
+the_interpreter = ShellInterpreter().Create()
+
+def main():
+ Tcl.MainLoop(the_interpreter)